Carbureter.



W. ELKIN.

CARBURETER.-

APPLICATION FILED 0011.20, 1910. RENEWBD 11111.16, 191s.

l, Patented 001s. 14, 1913.

29 mann/EVS morren' einirne rnrenr orion ondermeer@ Speeleetioe of Lettere Beten- Patented @et lid, Q.,

*i Apgleeton le Qotober 20, 19m, Serial Zelo. @253125. Renewed January 16, 1918. Serial No. 742,473. I

To all whom may concern:

Be it known that I, Wennen Eutin? citizen of the Uni-ted States, and e resident oil llllinehester, county of Clark, and State rif-Kentucky, have inventedcertain new and useful improvements in Cerbureters, of which the -ollowing is a specification.

My invention is en improvement in cer#1 bureters, and consists in certain novel constructions, end combinations or parte, hereinefter described and claimed.

Referring to the drawings forming; e port hereof, Figure l is e vertical section olf the improvement. 2 is n section-on the line 2-2 of Fig. 1. Fig. is aside View of the shells forming the screeng and Fig. 4 is n Sectional view of the lower part of the improvement :it right ongles to the seetion of Fig. l sind on e reduced seele and with e modified forni' ol screen.

The present embodiment oi the invention comprises a. marin casing 1, having* at each end e central circular opening l and 5 en annular air chamber being 'formed between the openings, the casing having bevond the opening 5, :in extension 2, provided at one' side with en internally threaded nipple 3, adapted for connection with the engineJ li. cylindrical valve casing 6 is arranged in the valve casing, and the said valve casing is reduced et its lower end et L o shoulder 8, being formed between the mein portion and the reduced portion.

The valvecesing is seated in. the openings 4 and 5, the mein portion engaging the opening; 5, and the reduced portion engreegirigl the opening il, while the shoulder 8 is seete'd'in a rahbet 9 'eneirelingg the opening The upper end of the valve casing is onen, end the lower end is closed sind provided with o circular opening 10. l

A plurality of annuler grooves 11 is formed in the inner face of the main portion of the valve easing, the seid 2grooves being spaced eport from each other. A cylindrical valve 12 fits within the. valve easing, the lower end 13A thereof being reduced t0 lt within the portion 7 of the casing, `end the outer surface of the valve is provided with spaced annular grooves 14, registering with the grooves 11 of the casing.

A reference to Fig. 2 will show that the grooves 11 communicate with the chamber 40, b v means of slots 40a, and that the grooves 14 communicate with the interior of the,

'- velve, by Ineens of slots 14a. The air is: thus free to enter from the chamber el() through the slots 4Q, grooves 1I, he and slots ht to the interior of the-eerhureter.

The lower -end l5 of the valve iS Closed, and e stern 16 extends from the center there 4of through the openin 10 in the bottom of the easing, and the si e well of the valve is provided with an annular series 17 of spaced slots, adjacent to the seid lower end, which .are adopted to. register with the slots of a, similar series 18 in the side well off 'the casing.

An auxiliary casing 19 is :irren ed below the casing 1, the upper end ol the casing 1, and the casings are held together by cap screws 20. The opper end of the casing 19 is `provided with `ein opening. for receiving the valve easing, and the outer fac/es of the upper end of the easing 19 and the lower end of the casing 1 are rabbeted as shown in Fig. 1, to receive en annular iange2l on a bushing 22 which eneireles the valve casing` between the seid casing and the auX- ilia-rv easing. The lower end of the bushing is robbeted in each face es shown in Fig. l, and concentric shells 23 and 24 of perforete materiel are connected with the bushing,4 the upper end of one shell being arranged on the outer rabbeted surface and the upper end of the other shell on the inner rabbeted surface, so that the outer face of one shell and inner face of the other is flush with the adjacent fece o the bushing; The inner shell 24 is of. fino mesh, as shown. more clearly in Fig'. 3, while the outer 23 is of course mesh, end the lower edge of the outer shell is bent inwardly at 25 into Contact with the lower edge of. the inner shell. The said lower edges are iiush with the lower end of the valve casing and both shells coverthe slots 17 and 18.

The auxiliary casing 19 is provided, di'- rectlv below and in alinement with the stem 16, with an 'internally threaded sleeve 26 eX- tending through the wall of the easing, and e sleeve nut 27is threaded through` the sleeve. A spring' 28 is arranged within the sleeve nut. and the lower end of the stern 16 seats on the spring. The outer end 'of the nut is provided with a head v29 f OIfxCOnVBH- ienc'e inturningr the same. The casing 19 is also provided with un annular groove or resserre 30 near its upper end, and with en fitting against the lewerend of the casing roo los

the ring internal annular rib 31 below the groove or passage. The inner face of the rib is spaced apart from the outer face of the shell 23 as shown to permit the excess fu'el to pass downwardly over the shell. A ring 35 encircles the outer shell between the shell and the groove, and the said ring is provided with a plurality of ports 36, for permitting the accessof the fuel to the slots 17-18 of the valve and casing. Adjacent to the sleeve Q6, the casing .19 is provided with a lateral discharge port 32,-and with a nipple 33, into which is threaded a drain pipe 34, leading te a suitable place of discharge, as for instance the supply tank or reservoir for fuel, or a well. A passage 37 is formed in the wall of the auxiliary casing 19 leading from the interior of the casing to the groove 30, and a valve 33 is threaded thro-ugh the easing for controlling the said passage. A small pipe 39 is threaded into the lower end of the passage, and extends into the drain pipe.

The liquid fuel, as for instance gasolene is fed into the groove or passage 30, which is 'the distributing chamber, by means of a small pump, not shown, and is thrown onto The liquid flows, by gravity, down the ring and onto the shells, the surplus passing outv of the casing 19 through the pipe 34, and through the pipe 39. The engine. draws in the proper amount of fuel, through tne ports 36 of the ring, and the slots 17 and 18 of the valve casing, into the interior of the valve, where it is mixed with a suitable quantity of air, from the chamber 40 of the main casing, the said air entering through the grooves 11, 14. The mixture then passes into the extension 2, andinto the engine.

The valve l2 comprising a shaft 41 reciprocable in a sleeve 44. connected with the extension, to he outer end of which is secured a grooved wheel bv means of a nut 43, threaded on to the shaft. rlhe inner end of the shaft bears against one arm of a rock shaft 1G journaled in a bearing 4t? on the extension,

land having its other arrn 4 8 bearing upon the upper end of a rod ,49. The lower end of the rod rests in a seat 5() in the lower end of the valve. A pulley 51 `is iournaled on the shaft 41, and is connected bv a belt not shown) with a rota ling part of the engine. rilhe hub of the pulley provided adiacent to the wheel ft2 with a pair of oppositel ,f' arranged arms 53, to each of which is pivoted an elbow lever -One arm of each lever is engaged with the annular groove of the wheel 42, and the other is provided with a weight 5ft?, and the said arms are connected bv a spring 55, the whole forming a centrifugal governor. lt will be evident that when the weights are thrown is controlled by a governor gine the shaft 4:1 will be moved inwardly, and the valve 12-13, will be depressed to lessen the supply of air, and also the supply of fuel.

1n operation, the liquid fuel, as for instance, gasolene, is fed to the chamber or groove 30, and a portion thereof passes through the small openings of the ring, and through the perforated shield, and through the slots 17 and 18 to the interior of the valve, the remainder passing out through the pipes 39 and 31. Only a certain proportion .passes through into the valve, the amount depending upon the action of the governor, and this amount. is mixed with a suitable quantity of air entering through the grooves 11, 11:. As the engine increases its speed, the valve is depressed against the resistance of the spring 27, shutting off a part of the fuel, and also a part of the air. It will be evident that by turning the nut 2S, the tension of the spring 27 may be reg'- ulated, and as a consequence the point at which the cutting off lof the mixture will occur. Thus the speed of the engine regulates the feeding of the mixture, and the engine is held to a predetermined speed.

I claim: y 1. A carbureter comprising a main casing having at one end anl outlet for attachment to an engine, a valve casing arranged Within the main casing, said valve casing being reduced at the end remote from the outlet of the main casing, and having the said end closed, the main casing having an annular air chamber encircling the valve easing, and an annular fuel chamber encircling the reduced portion, a substantially cylindrical valve fitting Within the valve casing and having` a reduced portion fitting within the reduced portion of the valve casing, said valve and valve casing having air inlets normally registering with each other, and regis tering with the air chamber, and having fuel inlet passages adjacent to the fuel chamber of the main casing and normally registering with each other, a double screen arranged between the fuel chamber and the fuel' inlet passages a spring normally holdingthe valve with the inlet passages in register With the inlet passages of the valve casing, a governor having means for connecting the same with a. rotating part of the engine, and a connection between the governor and the valve for moving the said valve longitudinally of the casing against the resistance of the spring to partially close the air and fuel passages, said main casing havingl an outletat its lower end for permitting the escape of the excess fuel.

2. A carbureter comprising a valve casing having an'outlet for thc mixture, a valve I fitting within the casing and movable lon-4 ',cjitudmally thereof, said valve having anoutwarflly by an increase in speed of the enuular series of air inlets and the casing havfrom the outlet` of ing annular series of air inlets adapted to re 'ster with the inlets of the valve, said va ve having an annular series of fuel inlets and the casing having` an annular series of fuel inlets adapted to register therewith and on the opposite side of the air inlets the casing, a spring normally holding the valve in position, whereby the inlets thereof register with the inlets of the casing, a governor adaptedto lbe operated by the engine, and a connection lietween the governor and the `valve for moving the said valve against the' resistance of the spring, said casing having an annular air chamber encircling the valve adjacent tothe air inlets, and having an annular fue] chamber encircling the valve adjacent to the fuel inlets, and a ring encirclingthe casing between the fuel chamber 'and the fuel in# lets of the valve, said ring having ports', said fuel chamber having an outlet `and a valve controlling the outlet. ne 8. A carburetor comprising a valve casing having an outlet for the mixture. a valve fitting within the casing and no'v# able longitu'dinallj7 thereof, said valve havadaptec'l to register ing annular series of air inlets'and the casing having annular series of tir inlets with the inlets of having an annular the valve said valve series of fuel inlets and the casing having an annular series of fuel inlets adapted to register therewith and on the opposite side of the air inlets from the outlet of the casing,` a spring normally holding the valve in position, hereby the' inlets thereof register with the inlets of the casing', a governor the valve adjacent to the air inlets,

adapted to be operated by the engine, a connection between the governor and the valve for moving the said valve against the resistance of the spring, said casing having an annular air chamber encircling the valve adjacent to the air inlets `and having an annular fuel chamber encircling the valve an- Ajacent to the fuel inlets, and a ring encircling the casing between the fuel chamber and the fuel inlets off the valve, said ring having ports.

A carbureter comprising a valve casing havingan outlet for the mixture, a valve litting within the casing and movable longitudinally thereof, said valve and casing having inlets, and fuel inlets normally registering with each other, yielding means normally holding the valve in such position that the air and fuel inlets thereof register with the air and fuel inlets of the casing, a governor adapted to be operated by the engine, a connection'between the governor and the valve for moving the said valve, the casing having'an annular air chamber encircling and having an annular fuel chamberV encircling lthe valve adjacent to the fuel inlets, a screen encircling the casing between the fuel charn lier and the inlets, and a ring encircling the screen and engaging the outer face thereof, said ring having openings' for admitting the fuel to the screen.

WARREN ELKN,

Vllitnesses Jas. H. PoYN'rEn, ELIAs Gunnar. 

